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Finding the Fourth Proportional to 51,320.40, 76,980.60 and 48,914.70

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Solution

The fourth proportional to 51,320.40, 76,980.60 and 48,914.70 is: 73,372.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,320.40 : 76,980.60 = 48,914.70 : x
  2. Step 2: Convert to fraction form
    51,320.40/76,980.60 = 48,914.70/x
  3. Step 3: Cross multiply
    51,320.40x = 76,980.60 × 48,914.70
  4. Step 4: Simplify right side
    51,320.40x = 3,765,482,954.82
  5. Step 5: Solve for x
    x = 3,765,482,954.82/51,320.40
  6. Step 6: Final answer
    x = 73,372.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.